Hazardous & Medical Waste Patents: Who Leads, Where the Gaps Are 2026
- 22.1% concentration at the very top. The five most active filers together hold 91 of 412 records in scope (22.1%), while the ranked leaders extend to 100 companies with a long tail of single- and few-filing entrants below them.
- Filing kept climbing through 2024. Filings rose from 10 in 2021 to 12 in 2024, a +20% increase over that span, with 2022 the peak year so far at 12; 2025-26 counts will keep rising as publication catches up.
- Disposal and water treatment classes dominate, sterilization is a distinct cluster. B09B (solid waste disposal, 33.3%) and C02F (water & wastewater treatment, 30.6%) lead the IPC mix, with A61L (sterilising & disinfecting, 22.3%) forming a separate, smaller cluster worth watching on its own.
Filing growth compares 2021 (10 records) with 2024 (12) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 412 records in scope (CR5), not by the ranked leaders only.
What the patent record shows
Hazardous and medical waste treatment sits at the intersection of thermal destruction, chemical detoxification and biological sterilisation, and the filing record reflects that mix rather than a single dominant process. 412 records published between 2015 and mid-2026 cover routes from rotary kiln incineration and autoclave sterilisation to microwave disinfection and waste segregation logistics, with claims scattered across eight major IPC subclasses. No single assignee owns the field outright: the leader holds 32 records against a field where the fifth-ranked filer already sits at 13 and the tenth at 10, and 91 records (22.1% of all 412 in scope) belong to the top five combined.
The composition data points to two centres of gravity rather than one: solid waste disposal and wastewater treatment classes together touch well over half of all records, while incineration, sterilisation, separation and detox processes each carry a meaningful but smaller share. That spread suggests the field rewards process integration — combining a destruction step with an emissions or effluent step — more than it rewards a single novel mechanism.
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Filing trend and technology mix
Two views of the same 412 records: filing activity by year, and the IPC subclasses those records are classified under. Because a single record can carry multiple IPC codes, the class shares below sum to well over 100% of the record total — that is expected, not an error.
Filing activity, 2017-2026
Filings moved from 3 in 2017 to a peak of 12 in 2022, then held near that level through 2024 (10 in 2021 rising to 12 in 2024, +20%). The 2025 and 2026 figures will revise upward as publication catches up with roughly an 18-month lag behind filing, so the apparent flattening in the newest years should not be read as a slowdown.
Technology composition by IPC subclass
B09B (solid waste disposal) and C02F (water & wastewater treatment) are the two largest classes, each touching roughly a third of records, followed by F23G (incinerators) and A61L (sterilising & disinfecting) in the low-to-mid twenties. B01D, B01J, A62D and C01G form a second tier between 11% and 19%, marking separation, catalytic, detoxification and metal-compound chemistries as smaller but persistent sub-fields.
Shares are the percentage of the 412 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Hazardous and Medical Waste Treatment with Eureka
This page is one run against one query. Ask Eureka your own question about hazardous and medical waste treatment and every answer comes back with the patent numbers behind it.
Try EurekaA recent filing worth reading in full
Equipment and Method for Intelligent Mobile Medical Waste Disposal and Flue Gas Purification
Provided are equipment and methods for intelligent mobile medical waste disposal and flue gas purification, and the equipment includes a vehicle-mounted mobile platform and a skid-mounted standard container; the vehicle-mounted mobile platform is composed of a standard semi-trailer truck and a truck carriage base used for mobile transportation, cargo loading, fuel loading and unloading, power charging and discharging and network information transmission; the skid-mounted standard container is loaded above the truck carriage base and houses the treatment and purification process itself.Abstract truncated to the portion supplied in the filing record.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US6386386B1 | Medical waste segregation apparatus with moveable floor | 221 |
| 2 | US4670634A | In situ decontamination of spills and landfills by radio frequency heating | 157 |
| 3 | US6810821B2 | Hazardous waste treatment method and apparatus | 114 |
| 4 | US5401444A | Apparatus and method for verifiably sterilizing, destroying and encapsulating regulated medical wastes | 111 |
| 5 | US5217688A | Process for the disposal of medical waste | 104 |
| 6 | US5592811A | Method and apparatus for the destruction of volatile organic compounds | 90 |
| 7 | US5650128A | Method for destruction of volatile organic compound flows of varying concentration | 82 |
| 8 | US6655137B1 | Advanced combined cycle co-generation abatement system | 81 |
| 9 | US6790429B2 | Methods of synthesizing an oxidant and applications thereof | 78 |
| 10 | US5635139A | Method and apparatus for destruction of volatile organic compound flows of varying concentration | 78 |
Citation counts accumulate over time, so older records such as the 1990s and early-2000s filings below lead the table; treat citation rank as a signal of influence within this corpus, not of current commercial relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the numbers mean for a filing decision
The dataset points to a field with an identifiable leader but no gatekeeper, a technology mix split across disposal and treatment rather than one dominant process, and a growth curve that is still rising as of the last complete year.
A leader, not a gatekeeper
The top five assignees hold 91 of 412 records (22.1%), and the leader alone accounts for 32. That leaves close to four-fifths of the record base spread across a long tail of the remaining ranked companies — few enough at the top to identify, but not concentrated enough to block a well-designed new filing outright.
Momentum still building through the last complete year
Filings grew from 10 in 2021 to 12 in 2024, a +20% rise, with 2022 marking the peak year so far at 12. Because publication lags filing by roughly 18 months, the softer-looking 2025-26 counts are an artefact of the reporting window, not evidence the field is cooling.
Two anchors, several satellites
Solid waste disposal (B09B) and water/wastewater treatment (C02F) each touch roughly a third of all records, while incineration and sterilisation form their own smaller clusters at 23.3% and 22.3%. Detox and metal-compound chemistries (A62D, C01G) sit furthest from the centre, at 10-11% each, and are the classes most likely to still have room for a distinctive claim.
US-anchored, with a real PCT and EPO presence
The United States receives the largest single share of filings at 127, ahead of Europe (EPO, 50), WIPO/PCT (42), India (38), Australia (35) and Canada (30). A filer targeting this space needs at minimum a US and PCT strategy; the EPO and India volumes are large enough that a regional-only filing risks missing meaningful prior art.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to hazardous and medical waste treatment, with the prior art for and against each one.
Who is filing, and what is still open
The ranked leaders span dedicated waste-treatment specialists, diversified industrial groups and individual inventors, with several co-filing pairs showing repeat collaboration rather than one-off filings.
One clear leader, no runaway share
The top-ranked assignee holds 32 records against a fifth-place figure of 13 and a tenth-place figure of 10 — a steep drop after the leader but a gentle taper after that, consistent with a field where technical routes (thermal, chemical, biological) each support their own specialists rather than one company covering all of them.
A small number of repeat co-filing pairs
Ten co-assignee pairs appear in the dataset, with the strongest pairing appearing together on 12 records — evidence of a sustained working relationship rather than a one-off joint filing. Most other pairs appear only two or three times, suggesting collaboration in this field is still the exception rather than the norm.
Recent activity has gone quiet among historic leaders
Several of the most-ranked assignees, including the field's largest single filer, show zero filings in the latest year tracked. Given the roughly 18-month publication lag, this is at least partly a reporting artefact — but it is also a signal that new entrants and mid-tier filers may be the ones actually driving 2024-2026 activity rather than the historic leaders.
| Assignee | Recent year | YoY |
|---|---|---|
| Ferrate Treatment Technologies LLC | 0 | — |
| Sterile Technology Industries Inc | 0 | — |
| LAU | 0 | — |
| AB INITIO LC | 0 | — |
| CHAN | 0 | — |
| Honeywell International Inc | 0 | — |
| Thermatrix Inc | 0 | — |
| Technios Ltd | 0 | — |
Where to take this
The dataset points to specific next steps depending on whether the goal is freedom-to-operate, competitive tracking or identifying a filing gap.
Map the white space precisely
The under-claimed branches identified here — detox chemistries, mobile treatment units, segregation automation — are starting points, not conclusions. A claim-level search inside those classes will show whether the low share reflects genuine open space or just narrower classification practice.
Explore white space in Eureka →Track the quiet leaders
Several top-ranked assignees show no recent filings, which could mean strategic withdrawal, a pause before a new filing wave, or simply publication lag. Either way, that shift changes who a freedom-to-operate search needs to prioritise.
Monitor assignee activity in Eureka →Read the recent filing in full
The 2025 mobile medical waste disposal filing bundles a transport platform with an on-site treatment and purification process — worth reading claim-by-claim before designing a competing or adjacent system.
Open the full filing in Eureka →Common questions about this patent landscape
The dataset ranks 100 companies by record count, with the leading assignee holding 32 records, well ahead of the fifth-place filer at 13 and the tenth-place filer at 10. The top five combined account for 91 of 412 records in scope, or 22.1% — a meaningful concentration but not a dominant one, since close to four-fifths of records sit outside that top five. This is a field with an identifiable leader rather than a single gatekeeper controlling the claim space.
Filings rose from 10 in 2021 to 12 in 2024, a 20% increase over that span, with 2022 the peak year so far at 12. The apparent dip in 2025 and 2026 figures is an artefact of publication lag — patent applications typically publish roughly 18 months after filing, so the most recent one to two years in any dataset will always look lower than they eventually turn out to be. Treat 2024 as the most recent year that reflects a reasonably complete picture.
Solid waste disposal (IPC class B09B) and water/wastewater treatment (C02F) are the two largest clusters, touching roughly a third of the 412 records each. Incineration (F23G) and sterilising/disinfecting (A61L) form their own smaller clusters at around 23% and 22% respectively, while separation processes, catalytic chemistry, detoxification and metal-compound chemistries sit in a second tier between 11% and 19%. Because records commonly carry more than one IPC code, these figures overlap rather than summing to 100%.
The classes with the lowest record share relative to the core disposal and incineration clusters — chemical protection and detox (A62D, 10.9%) and metal-compound chemistries (C01G, 10.2%) — are the most under-claimed relative to the field's centre of gravity. Mobile and on-site treatment integration, flue gas purification tied to disposal units, and waste segregation automation also show lower density than the core B09B/C02F clusters. Any white-space claim, however, needs a claim-level search in Eureka to confirm the gap is real and not an artefact of classification practice.
Concentration is moderate: the top five assignees hold 22.1% of all 412 records in scope, and the top ten hold 34.7%. That leaves nearly two-thirds of records distributed across the remaining ranked companies and a long tail of smaller filers, so the field is not locked up by a small handful of players the way some capital-intensive hardware categories are. A new entrant filing a genuinely differentiated process claim still has room to operate.
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Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.